21665008 Tube | Genuine Volvo Penta Part

🔧 Product Description

A rigid ventilation tube fitted in the open crankcase-breather system of Volvo Penta TAD560VE engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD560VE
• Volvo Penta TAD561VE

• Engine Family: TAD

⚙️ Key Features

• TAD560VE crankcase ventilation
• Connects oil separator 20930510 to the return system
• Used with rubber sleeve 21088555
• Oil-mist-resistant construction

🔌 Function

The tube carries crankcase vapour from the engine to the oil separator while allowing separated oil to return through the associated line.

⚠️ Common Signs of Failure

• Oil mist leakage
• Tube cracked or restricted
• Excessive crankcase pressure
• Rubber sleeve deterioration
• Oil accumulation around joints

🛠️ Service Notes

• Fit the tube so it reaches both connections without being sprung into place — a tube pulled into line loads its ends and cracks, usually at a bend or a joint
• Renew the sealing washers, O-rings or gaskets at every connection rather than reusing them, and start each union by hand so you can feel that the thread and seating face are properly engaged before tightening
• Keep the bore clean: cap or plug both ends until the moment of fitting, and never blow debris through a tube into the component it feeds
• Support the tube in its original clips and brackets — an unsupported run will fatigue from engine vibration even though it sealed perfectly when new
• Do not straighten, re-bend or patch a damaged tube; its shape is what gives the correct stress-free fit, and tighten unions only to the figure in the workshop manual for your engine

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20930510 - Oil separator
• 21038626 - Plane gasket
• 21088555 - Rubber sleeve
• 21665014 - Return line
• 993605 - Gasket
• 20460936 - Hollow screw

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging